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What has more mass hydrogen or helium?
Helium has more mass than hydrogen. Helium is composed of two protons and two neutrons, while hydrogen is a single proton.
Is a lead atom heavier than a helium atom?
Yes, a lead atom is heavier than a helium atom. Lead has an atomic number of 82, while helium has an atomic number of 2. Atomic number represents the number of protons in an atom's nucleus, and since lead has more protons than helium, it is heavier. Additionally, lead has a higher atomic mass (207.2 amu) compared to helium (4.0026 amu), further confirming that lead is indeed heavier than helium.
Which has more atoms 2 moles of helium or 1 mole of gold?
2 moles of helium contain more atoms than 1 mole of gold. Since 1 mole of any substance contains Avogadro's number of atoms (approximately (6.022 \times 10^{23})), 2 moles of helium would have about (1.204 \times 10^{24}) atoms, while 1 mole of gold has approximately (6.022 \times 10^{23}) atoms. Therefore, 2 moles of helium have double the number of atoms compared to 1 mole of gold.
What weighs more a mole of sucrose or a mole of water?
A mole of water weighs more than a mole of sucrose. This is because the molar mass of water (18 g/mol) is less than the molar mass of sucrose (342 g/mol).
Why is a sample of helium is more dense than a sample of hydrogen under the same conditions?
Avagadro's hypothesis was that at a constant pressure and temperature, the number of molecules of two gases at equal volumes will be the same. This is true in that there is always one mole of gas per 22.4 liters no matter what the gas is. However, each gas has a different molarity, or grams per mole. This means that although each gas will have one mole in 22.4 liters, they will have different weights. For example, hydrogen contains 2.02 grams per mole, while helium contains 4 grams per mole. Therefore, at a constant pressure and temperature hydrogen and helium have different weights at the same constant volume.
Explain why a mole of iron atoms has more mass than a mole of helium atoms when there are the same number of atoms in a mole of each element?
A mole of iron has more mass than a mole of helium, even though they contain the same number of atoms, because 1 atom of iron has a greater mass than 1 atom of helium. It is similar to why 1 dozen bricks has a greater mass than 1 dozen roses. There are 12 items in each case, but 1 brick has a greater mass than 1 rose.
Which has the largest mass A 3 mol of magnesium B 1 mol of sucrose c12h22o11 C 10 mol of helium?
Since magnesium and helium do not form elemental molecules, a mole of these elements is the same as a gram atomic mass, which is 24.305 for magnesium and 4.00260 for helium. The gram molecular mass for sucrose is 342.30. Therefore, the mass of: A. 3 moles of magnesium is 72.915 grams; B 1 mole of sucrose (C12H22O11) is 342.30 grams; and C. 10 moles of helium is 40.0260 grams. The largest of these is obviously the single mole of sucrose.
What has more mass hydrogen or helium?
Helium has more mass than hydrogen. Helium is composed of two protons and two neutrons, while hydrogen is a single proton.
Is a lead atom heavier than a helium atom?
Yes, a lead atom is heavier than a helium atom. Lead has an atomic number of 82, while helium has an atomic number of 2. Atomic number represents the number of protons in an atom's nucleus, and since lead has more protons than helium, it is heavier. Additionally, lead has a higher atomic mass (207.2 amu) compared to helium (4.0026 amu), further confirming that lead is indeed heavier than helium.
Which has more mass a mole of potassium or a mole of sodium?
A mole of potassium. Sodium weighs 22.990 g/mol while potassium weighs 39.068 g/mol.
Is a 16.00-g sample of oxygen atoms contains the same number of particles as a 4.003-g sample of He atoms?
Yes. 16.00g of oxygen is its molar mass, which is the mass of one mole of oxygen. 4.003g is the molar mass of helium, which is also the mass of one mole of helium. One mole of anything is 6.022 x 1023. One mole of oxygen atoms is 6.022 x 1023 atoms of oxygen and one mole of helium atoms is 6.022 x 1023 atoms of helium.
Which has more atoms 2 moles of helium or 1 mole of gold?
2 moles of helium contain more atoms than 1 mole of gold. Since 1 mole of any substance contains Avogadro's number of atoms (approximately (6.022 \times 10^{23})), 2 moles of helium would have about (1.204 \times 10^{24}) atoms, while 1 mole of gold has approximately (6.022 \times 10^{23}) atoms. Therefore, 2 moles of helium have double the number of atoms compared to 1 mole of gold.
What weighs more a mole of sucrose or a mole of water?
A mole of water weighs more than a mole of sucrose. This is because the molar mass of water (18 g/mol) is less than the molar mass of sucrose (342 g/mol).
Why is a sample of helium is more dense than a sample of hydrogen under the same conditions?
Avagadro's hypothesis was that at a constant pressure and temperature, the number of molecules of two gases at equal volumes will be the same. This is true in that there is always one mole of gas per 22.4 liters no matter what the gas is. However, each gas has a different molarity, or grams per mole. This means that although each gas will have one mole in 22.4 liters, they will have different weights. For example, hydrogen contains 2.02 grams per mole, while helium contains 4 grams per mole. Therefore, at a constant pressure and temperature hydrogen and helium have different weights at the same constant volume.
What contains more molecules a mole of lead or a mole of carbon?
They both have the same number of atoms. The weight is different
Is the The mass of 4 individual hydrogen atoms is more than the mass of 1 helium?
Yes.
Does 420000 L of air have a greater or smaller mass than 420000 L of helium in a balloon?
At the same temperature and pressure, the molar volumes of gases are pretty close to equal (as long as they are at a low enough density to behave like ideal gasses). That being the case, one mole of helium weighs only about 4 grams while a mole of air weighs around 28.97 g (taking a weighted average of the components of the air) so for the same volume, the air would have more mass than the helium unless the helium was much colder or at a much higher pressure.
